English

Odd q-State Clock Spin-Glass Models in Three Dimensions, Asymmetric Phase Diagrams, and Multiple Algebraically Ordered Phases

Statistical Mechanics 2015-03-04 v2 Disordered Systems and Neural Networks

Abstract

Distinctive orderings and phase diagram structures are found, from renormalization-group theory, for odd q-state clock spin-glass models in d=3 dimensions. These models exhibit asymmetric phase diagrams, as is also the case for quantum Heisenberg spin-glass models. No finite-temperature spin-glass phase occurs. For all odd q5q\geqslant 5, algebraically ordered antiferromagnetic phases occur. One such phase is dominant and occurs for all q5q\geqslant 5. Other such phases occupy small low-temperature portions of the phase diagrams and occur for 5q155 \leqslant q \leqslant 15. All algebraically ordered phases have the same structure, determined by an attractive finite-temperature sink fixed point where a dominant and a subdominant pair states have the only non-zero Boltzmann weights. The phase transition critical exponents quickly saturate to the high q value.

Keywords

Cite

@article{arxiv.1407.5526,
  title  = {Odd q-State Clock Spin-Glass Models in Three Dimensions, Asymmetric Phase Diagrams, and Multiple Algebraically Ordered Phases},
  author = {Efe Ilker and A. Nihat Berker},
  journal= {arXiv preprint arXiv:1407.5526},
  year   = {2015}
}

Comments

Published version, 9 pages, 10 phase diagrams, 5 figures, 1 table